CN103344232B - The split type fibre optic gyroscope of a kind of multiaxis - Google Patents
The split type fibre optic gyroscope of a kind of multiaxis Download PDFInfo
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- CN103344232B CN103344232B CN201310270624.0A CN201310270624A CN103344232B CN 103344232 B CN103344232 B CN 103344232B CN 201310270624 A CN201310270624 A CN 201310270624A CN 103344232 B CN103344232 B CN 103344232B
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Abstract
The invention discloses the split type fibre optic gyroscope of a kind of multiaxis, it takes photoelectricity split-type design, comprises circuit module, responsive loop module and optoelectronic composite cable module three part, and circuit module and responsive loop module are by optoelectronic composite cable model calling.Wherein, circuit module mainly comprises light source, optically-coupled submodule, multi-path light detector and signal transacting submodule; Responsive loop module is by multiple single shaft sensing ring way module composition, and each single shaft sensing ring way module is made up of Y waveguide phase-modulator, fiber optic loop and ring skeleton thereof, physical construction; Optoelectronic composite cable module is made up of sleeve pipe, optical cable, cable, the corresponding joints of optical fibre and SMA radio frequency interface.Modular design of the present invention, compact conformation, instant-plugging connects, simple installation, and each module has good replaceability, is convenient to dismounting and safeguards.Meanwhile, adopt split-type structural, physical isolation heater members and fiber optic loop, reduce the uneven impact on Gyro Precision of Temperature Distribution.
Description
Technical field
The present invention relates to the technical field of multi-axis fiber optic gyroscope instrument, particularly the split type fibre optic gyroscope of a kind of multiaxis.
Background technology
Optical fibre gyro is once coming out with its obvious advantage, and the dirigibility of structure and tempting prospect, cause the most attention of many national universities and scientific research institution in the world, two obtain a very large progress during the last ten years.By the effort of researchers, many key technical problems are resolved, especially manyly requiring strictly precision and volume weight, the environment of bad environments has irreplaceable effect.
Optical fibre gyro, compared with electro-mechanical gyro or laser gyro, has distinguishing feature: parts are few, movement-less part, instrument firm stable, have the ability of stronger shock-resistant and anti-accelerated motion; Fiber optic coils increases the detection light path of laser beam, makes detection sensitivity and resolution improve several orders of magnitude than laser gyro; Be easy to adopt integrated optics technique, signal stabilization is reliable, and can directly export by numeral, and connects with computer interface; Structure is simple, price is low, volume is little, quality is little.
The integrated level of multi-axis fiber optic gyroscope is high, to installation accuracy and designing requirement higher, be easy to cause the heating of photoelectric device or electromagnetism to the interference of gyro sensitive optical fibre ring.The fibre optic gyroscope of most domestic research institution and unit adopts unitary design, namely adopt by gyro sensing unit and light source and signal processing unit integrated, such as ZL200510063052.4 and ZL200810115131.9, but this mode is unfavorable for realizing the jamproof optical fibre gyro of high precision.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve conventional fiber-optic gyroscopes complex structure, and eliminating heater members affects the temperature of sensitive optical fibre ring.The object of the present invention is to provide the split type fibre optic gyroscope of a kind of multiaxis, the heating parts such as gyro circuit, light source are separated with responsive loop, and adopts modular construction, be easy to the integrated of gyro and assembling.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the split type fibre optic gyroscope of a kind of multiaxis, be made up of circuit module, optoelectronic composite cable module and responsive loop module three part, wherein circuit module and responsive loop module pass through together with optoelectronic composite cable model calling;
Described circuit module comprises ASE light source, optically-coupled submodule, the 1st photo-detector to the n-th photo-detector and signal transacting submodule; Output tail optical fiber and the optically-coupled submodule input end a of ASE light source hold welding, and the control signal of ASE light source is inputted by signal processing module; The n section tail optical fiber of the b output terminal of optically-coupled submodule respectively with the 1st photo-detector to the n-th photo-detector welding; The output access signal transacting submodule of the 1st photo-detector to the n-th photo-detector; The n section tail optical fiber of the c output terminal of optically-coupled submodule is connected to n the FC joints of optical fibre, and signal transacting submodule comprises n SMA radio-frequency joint, can realize being connected with optoelectronic composite cable module instant-plugging;
Described optoelectronic composite cable module clad material is PVC sleeve pipe, in sleeve pipe, n section optical fiber and n segment signal line are polymerized to a branch of, wherein every section of optical fiber also does protection further by polymkeric substance flexible pipe, have n the FC joints of optical fibre at the endpiece of sleeve pipe both sides, n segment signal line has n SMA radio-frequency joint at the endpiece of sleeve pipe both sides;
Described responsive loop module is by the 1st single shaft sensing ring way module to the n-th single shaft sensing ring way module composition, n the FC joints of optical fibre can realize being connected with optoelectronic composite cable module instant-plugging with n SMA radio-frequency joint, wherein, each single shaft sensing ring way module is made up of Y waveguide phase-modulator, fiber optic loop, ring skeleton and physical construction thereof; The FC joints of optical fibre are connected with the input end of Y waveguide phase-modulator, and SMA radio frequency interface is connected with Y waveguide phase-modulator control signal end; Fiber optic loop optical fiber used is polarization maintaining optical fibre, photonic crystal fiber or single-mode fiber.
Further, circuit module, responsive loop module and optoelectronic composite cable module can realize instant-plugging by the FC joints of optical fibre being connected corresponding sequence number with SMA radio-frequency joint and be connected.
Further, described optically-coupled submodule comprises a wave train beam splitter, the 1st fiber coupler to the n-th fiber coupler; Wherein, wave train beam splitter input end a and the welding of ASE light source, the tail optical fiber of wave train beam splitter output terminal and the A of the 1st fiber coupler to the n-th fiber coupler hold welding, the c termination of the 1st fiber coupler to the n-th fiber coupler has n the FC joints of optical fibre, the b of the 1st fiber coupler to the n-th fiber coupler end respectively with the 1st photo-detector to the n-th photo-detector welding.
Further, the ring frame body material supporting fiber optic loop is bakelite, and this material has good mechanical property and heat-proof quality, and temperature conductivity is less than 0.1W/mK.
Further, in described physical construction, upper and lower covers part is made up of magnetic masking layer, thermofin, aluminum hull respectively, and wherein: insulating layer material is teflon, adopt the mode of spraying to cover magnetic masking layer inwall, thickness is greater than 0.5mm; Aluminum hull outer wall and thermofin inwall are bonded as one.
The split type fibre optic gyroscope of multiaxis of the present invention advantage is compared with prior art:
(1), the present invention utilizes split-type structural, and physical isolation heater members and sensitive optical fibre ring, reduce the uneven impact on Gyro Precision of Temperature Distribution.
(2), the present invention utilizes the mode of common light source to increase the integration of system, reduces costs; Realize a road input multichannel constant power by optical coupler module to export, system architecture is compact.
(3), present invention achieves modular design, utilize optoelectronic composite cable module to realize responsive loop module and be connected fast with the instant-plugging of circuit module, system is installed easy and simple to handle, and module has good replaceability, and entire system layout is succinct, reliability is high.
(4), the present invention's ring skeleton part of supporting fiber optic loop adopts bakelite material, and this material has good mechanical property and heat-proof quality, improves the resisting temperature interference performance of system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the split type fibre optic gyroscope of multiaxis of the present invention;
Fig. 2 is the structural representation of circuit module of the present invention;
Fig. 3 is the structural representation of optoelectronic composite cable module of the present invention;
Fig. 4 is the structural representation of the responsive loop module of the present invention;
Fig. 5 is the structural representation of the responsive loop module of single shaft of the present invention;
Fig. 6 is the structural representation of optically-coupled submodule of the present invention
Fig. 7 is the mechanical construction drawing of single shaft sensing ring way module of the present invention;
Fig. 8 A is the structural drawing of ring skeleton of the present invention;
Fig. 8 B is the chart at the bottom of of ring skeleton of the present invention.
In figure: 1. circuit module 2. optoelectronic composite cable module 3. responsive loop module 4.ASE light source 5. optically-coupled submodule 6. photo-detector 7. signal processing module 8. fiber coupler 9. wave train beam splitter 10. single shaft sensing ring way module 11.Y Waveguide Phase Modulator 12. fiber optic loop 13. ring skeleton 14. physical construction 15. magnetic masking layer 16. thermofin 17. aluminum hull.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
One-piece construction of the present invention as shown in Figure 1, as seen from Figure 1, the split type fibre optic gyroscope of multiaxis of the present invention is made up of circuit module 1, optoelectronic composite cable module 2 and responsive loop module 3 three part, and wherein circuit module 1 and responsive loop module 3 realize the connection of light signal, electric signal by optoelectronic composite cable module 2.
Fig. 2 is the structural representation of circuit module 1.As seen from Figure 2, circuit module 1 comprises ASE light source 4, optically-coupled submodule 5, photo-detector 61 to photo-detector 6n and signal transacting submodule 7; Concrete annexation is: output tail optical fiber and the optical coupler module 5 input end a of ASE light source 4 hold welding, and the control signal of ASE light source 4 is inputted by signal processing module 7; The n section tail optical fiber of the b output terminal of optically-coupled submodule 5 respectively with photo-detector 61 to photo-detector 6n welding; The output access signal transacting submodule 7 of photo-detector 61 to photo-detector 6n; The n section tail optical fiber of the c output terminal of optically-coupled submodule 5 is connected to n FC joints of optical fibre FC
01-FC
0n, signal transacting submodule 7 comprises n SMA radio-frequency joint SMA
01-SMA
0n, can realize being connected with optoelectronic composite cable module 2 instant-plugging.
Optically-coupled submodule 5(is shown in Fig. 6) comprise a wave train beam splitter 9, fiber coupler 81 to fiber coupler 8n; Wherein, wave train beam splitter 9 input end a and ASE light source 4 welding, the tail optical fiber of wave train beam splitter 9 output terminal and the A of fiber coupler 81 to fiber coupler 8n hold welding, and the c termination of fiber coupler 81 to fiber coupler 8n has n FC joints of optical fibre FC
01-FC
0n, fiber coupler 81 to fiber coupler 8n b end respectively with photo-detector 61 to photo-detector 6n welding.
In the present invention, what light source adopted is the ASE light source of power adjustable, carries out light splitting by optically-coupled submodule, realizes a road input multichannel constant power and exports.The mode of this light source altogether adds the integration of system, reduces cost.
Fig. 3 is the structural representation of optoelectronic composite cable module 2.As seen from Figure 3; optoelectronic composite cable module 2 clad material is PVC sleeve pipe; in sleeve pipe, n section optical fiber and n segment signal line are polymerized to a branch of; wherein every section of optical fiber also does protection further by polymkeric substance flexible pipe; by the double shielding of clad material and polymkeric substance flexible pipe, can ensure that optical fiber does not damage because of External Force Acting.N FC joints of optical fibre FC is had at the endpiece of sleeve pipe both sides
11-FC
1n and FC
21-FC
2n, n segment signal line has n SMA radio-frequency joint SMA at the endpiece of sleeve pipe both sides
11-SMA
1n and SMA
21-SMA
2n.
Fig. 4 is the structural representation of responsive loop module 3.As seen from Figure 4, responsive loop module 3 is made up of single shaft sensing ring way module 101 to single shaft sensing ring way module 10n, n FC joints of optical fibre FC
31-FC
3n and n SMA radio-frequency joint SMA
31-SMA
3n can realize being connected with optoelectronic composite cable module 2 instant-plugging.Wherein, each single shaft sensing ring way module is made up of Y waveguide phase-modulator 11, fiber optic loop 12, ring skeleton 13 and physical construction 14 thereof; The FC joints of optical fibre are connected with the input end of Y waveguide phase-modulator 11, and SMA radio frequency interface is connected with Y waveguide phase-modulator 11 control signal end; Fiber optic loop optical fiber used is polarization maintaining optical fibre, photonic crystal fiber or single-mode fiber.
From Fig. 2,3,4, circuit module 1, optoelectronic composite cable module 2 and responsive loop module 3 have the splicing ear of optical fiber and signal wire, therefore by connecting the FC joints of optical fibre and SMA radio-frequency joint, i.e. the FC joints of optical fibre FC of corresponding sequence number
01-FC
0n, FC
11-FC
1n, FC
21-FC
2n, FC
31-FC
3corresponding by sequence number in n, such as, FC
01, FC
11, FC
21, FC
31 is corresponding connection, SMA radio-frequency joint SMA
01-SMA
0n, SMA
01-SMA
0n, SMA
01-SMA
0n, SMA
01-SMA
0corresponding by sequence number in n, such as, SMA
01, SMA
11, SMA
21, SMA
31 is corresponding connection, is easy to realizing circuit module 1, responsive loop module 3 is connected with the instant-plugging of optoelectronic composite cable module 2.
Fig. 7 is the physical construction schematic diagram of single axis fiber gyro sensing ring way module.As shown in Figure 7, in physical construction 14, upper and lower covers part is made up of magnetic masking layer 15, thermofin 16, aluminum hull 17 respectively, and wherein: thermofin 16 material is teflon, adopt the mode of spraying to cover magnetic masking layer 15 inwall, thickness is greater than 0.5mm; Aluminum hull 17 outer wall and thermofin 16 inwall are bonded as one.Ring skeleton part 13 bulk material supporting fiber optic loop is bakelite, and see Fig. 8, this material has good mechanical property and heat-proof quality, and temperature conductivity is less than 0.1W/mK.In upper and lower covers assembly of the present invention, magnetic masking layer 15, thermofin 16, aluminum hull 17 combine between the higher and lower levels closely, and form the temperature variation that an enclosed environment isolation is extraneous, improve the resisting temperature interference performance of fibre optic gyroscope, stable system performance, reliability are high.
The technology contents that the present invention does not elaborate belongs to the known technology of those skilled in the art.
Although be described the illustrative embodiment of the present invention above; so that the technician of this technology neck understands the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various change to limit and in the spirit and scope of the present invention determined, these changes are apparent, and all innovation and creation utilizing the present invention to conceive are all at the row of protection in appended claim.
Claims (1)
1. the split type fibre optic gyroscope of multiaxis, it is characterized in that: be made up of circuit module (1), optoelectronic composite cable module (2) and responsive loop module (3) three part, wherein circuit module (1) and responsive loop module (3) are linked together by optoelectronic composite cable module (2);
Described circuit module (1) comprises ASE light source (4), optically-coupled submodule (5), the 1st photo-detector (61) to the n-th photo-detector (6n) and signal transacting submodule (7); Output tail optical fiber and optically-coupled submodule (5) the input end a of ASE light source (4) hold welding, and the control signal of ASE light source (4) is inputted by signal processing module (7); The n section tail optical fiber of the b output terminal of optically-coupled submodule (5) respectively with the 1st photo-detector (61) to the n-th photo-detector (6n) welding; 1st photo-detector (61) is to output access signal transacting submodule (7) of the n-th photo-detector (6n); The n section tail optical fiber of the c output terminal of optically-coupled submodule (5) is connected to n FC joints of optical fibre FC
01-FC
0n, signal transacting submodule (7) comprises n SMA radio-frequency joint SMA
01-SMA
0n, can realize being connected with optoelectronic composite cable module (2) instant-plugging;
Described optoelectronic composite cable module (2) clad material is PVC sleeve pipe, and in sleeve pipe, n section optical fiber and n segment signal line are polymerized to a branch of, and wherein every section of optical fiber also does protection further by polymkeric substance flexible pipe, has n FC joints of optical fibre FC at the endpiece of sleeve pipe both sides
11-FC
1n and FC
21-FC
2n, n segment signal line has n SMA radio-frequency joint SMA at the endpiece of sleeve pipe both sides
11-SMA
1n and SMA
21-SMA
2n;
Described responsive loop module (3) is made up of to the n-th single shaft sensing ring way module (10n) the 1st single shaft sensing ring way module (101), n FC joints of optical fibre FC
31-FC
3n and n SMA radio-frequency joint SMA
31-SMA
3n can realize being connected with optoelectronic composite cable module (2) instant-plugging, wherein, each single shaft sensing ring way module is made up of Y waveguide phase-modulator (11), fiber optic loop (12), ring skeleton (13) and physical construction (14) thereof; The FC joints of optical fibre are connected with the input end of Y waveguide phase-modulator (11), and SMA radio frequency interface is connected with Y waveguide phase-modulator (11) control signal end; Fiber optic loop optical fiber used is polarization maintaining optical fibre, photonic crystal fiber or single-mode fiber;
Circuit module (1), responsive loop module (3) can realize instant-plugging by the FC joints of optical fibre being connected corresponding sequence number with SMA radio-frequency joint with optoelectronic composite cable module (2) and be connected;
Described optically-coupled submodule (5) comprises a wave train beam splitter (9), the 1st fiber coupler (81) to the n-th fiber coupler (8n); Wherein, wave train beam splitter (9) input end a and ASE light source (4) welding, the tail optical fiber of wave train beam splitter (9) output terminal and the 1st fiber coupler (81) hold welding to the A of the n-th fiber coupler (8n), and the 1st fiber coupler (81) has n FC joints of optical fibre FC to the c termination of the n-th fiber coupler (8n)
01-FC
0n, the 1st fiber coupler (81) to the n-th fiber coupler (8n) b end respectively with the 1st photo-detector (61) to the n-th photo-detector (6n) welding;
Ring skeleton (13) bulk material supporting fiber optic loop is bakelite, and this material has good mechanical property and heat-proof quality, and temperature conductivity is less than 0.1W/mK;
In described physical construction (14), upper and lower covers part is made up of magnetic masking layer (15), thermofin (16), aluminum hull (17) respectively, wherein: thermofin (16) material is teflon, adopt the mode of spraying to cover magnetic masking layer (15) inwall, thickness is greater than 0.5mm; Aluminum hull (17) outer wall and thermofin (16) inwall are bonded as one;
The split type fibre optic gyroscope of this multiaxis utilizes split-type structural, and physical isolation heater members and sensitive optical fibre ring, reduce the uneven impact on Gyro Precision of Temperature Distribution;
The split type fibre optic gyroscope of this multiaxis utilizes the mode of light source altogether to increase the integration of system, reduces costs; Realize a road input multichannel constant power by optically-coupled submodule to export, system architecture is compact;
The split type fibre optic gyroscope of this multiaxis achieves modular design, utilize optoelectronic composite cable module to realize responsive loop module to be connected fast with the instant-plugging of circuit module, system is installed easy and simple to handle, and module has good replaceability, and entire system layout is succinct, reliability is high;
The ring skeleton part that the split type fibre optic gyroscope of this multiaxis supports fiber optic loop adopts bakelite material, and this material has good mechanical property and heat-proof quality, improves the resisting temperature interference performance of system.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459009B (en) * | 2018-12-10 | 2022-10-28 | 河北汉光重工有限责任公司 | High-precision optical fiber gyroscope |
| CN110553637A (en) * | 2019-09-11 | 2019-12-10 | 上海航天控制技术研究所 | Optical fiber gyroscope combination |
| CN111998844A (en) * | 2020-08-13 | 2020-11-27 | 北京航空航天大学 | ASE light source for spherical inertial navigation system |
| CN115790565B (en) * | 2023-01-31 | 2023-05-12 | 中国船舶集团有限公司第七〇七研究所 | Split type ultra-high precision optical fiber gyroscope |
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|---|---|---|---|---|
| JP3223353B2 (en) * | 1997-12-15 | 2001-10-29 | 日本航空電子工業株式会社 | Multi-axis optical fiber gyro |
| CN101476889B (en) * | 2009-01-19 | 2011-01-05 | 浙江大学 | Split type optical fiber gyroscope satisfying reciprocity |
| CN201772882U (en) * | 2010-07-06 | 2011-03-23 | 北京自动化控制设备研究所 | Thermal insulation device used in fiber optic gyroscope |
| CN202947744U (en) * | 2012-09-18 | 2013-05-22 | 扬州蓝剑电子系统工程有限公司 | Three-axis integration photoelectric control system of high-precision fiber-optic gyroscope |
| CN202957069U (en) * | 2012-11-13 | 2013-05-29 | 深圳国人通信有限公司 | Novel photoelectric composite cable |
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